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Vulnerability record · CVE-2026-12240 · published 30 June 2026

CVE-2026-12240: Deserialization of untrusted data vulnerability

The Export User Data plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the unserialize function in all versions up to, and including, 2.2.6. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). Successful exploitation requires an administrator to trigger a user data export while a subscriber-level (or higher) user has stored a crafted serialized XLSXWriter object payload as their display name.

8.0 CVSS 3.1 High EPSS 0.62% · top 52.2% CWE-502 · Deserialization of untrusted data Deferred
8.0CVSS 3.1 base score
0.62%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
30 Jun 2026Last modified by NVD

Description

The Export User Data plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the unserialize function in all versions up to, and including, 2.2.6. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). Successful exploitation requires an administrator to trigger a user data export while a subscriber-level (or higher) user has stored a crafted serialized XLSXWriter object payload as their display name.

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

References

LinkTags
https://plugins.trac.wordpress.org/browser/export-user-data/tags/2.2.6/library/core/helper.php#L171
https://www.wordfence.com/threat-intel/vulnerabilities/id/39f12ff1-63ee-4131-a708-49633f22ccd4?source=cve

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Source: NIST National Vulnerability Database (record CVE-2026-12240), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.